This excerpt taken from the SMTC 10-Q filed Sep 7, 2007.
Section 3. Participation:
The Committee in its discretion shall designate each Employee or Independent Contractor who is eligible to participate in the Plan. An Employee or Independent Contractor designated by the Committee as a Participant who has not otherwise entered the Plan shall enter the Plan and become a Participant as of the date determined by the Committee. A Participant who separates from Service with the Employer and who later returns to Service will not be an Active Participant under the Plan except upon satisfaction of such terms and conditions as the Committee shall establish upon the Participants return to Service, whether or not the Participant shall have a balance remaining in the Deferred Compensation Account under the Plan on the date of the return to Service.